How To Fix PO637 - The conversion is performed using a single-level update table

PO637 - Overview

• Message type: E = Error

• Message class: PO - Spooler message

• Message number: 637

• Message text: The conversion is performed using a single-level update table

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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PO637 - Details

• The SAP error message PO637, which states "The conversion is performed using a single-level update table," typically occurs during the processing of purchase orders or related documents in SAP. This error is often related to issues with the data conversion or the way the system is trying to handle updates in the database.
  
  Cause:
  
  Data Structure Issues: The error may arise if the system is trying to convert or update data in a way that is not supported by the current data structure or configuration.
  Single-Level Update Table: The message indicates that the system is attempting to perform a conversion using a single-level update table, which may not be appropriate for the data being processed.
  Custom Code or Enhancements: If there are custom developments or enhancements in the system, they may not be handling the data correctly, leading to this error.
  
  Configuration Issues: Incorrect configuration in the relevant modules (like MM for Materials Management) can